Heel construction



Patented May 20, i924. l I i 'i n i UNITED STTES PATENT OFFICE.Y

.ANDREV C. HAUCK, OF BROOKLYN, NEW YORK, ASSIGNOR TOWILLIAMSBURGH WOOD l HEEL C OMANY, INC., OF BROOKLYN, NEW- YORK, A CORPORATION OF NEW YORK.

HEEL CONSTRUCTION.

Application filedApril 19, 192,0. Serial No. 374,906.

To all whom it may concern: two parts to interlock and hold, as .they are Be it known that l, ANDI-inw C. HAUCK, a driven.

citizen of the United States of America, and These dowels may be'made oflmetal or Aof aresident of Brooklyn, Kingsr `County, and hickory or other sufficiently hard wood,

State of New York, have invented 'certain or of hard fibre or the like and they may be 60 new and useful linprovements in Heel Conmade of solid material, as shown-in Figures sti;'uctions, of which thefollowing is a speci- 'l to 5, or of tubular or'hollow form, as shown fication. Y A iii Figure 6; y My present invention relates to the ln use, the dowels are usually applied by Y 10 strengthening and reinforcement of wooden first entering one of the wedge parts, (l0 in 65 or leather heels. the illustration), blunt end first, in the hole The objects lof tlieinvention are to .provide provided therefor iii the heel and then driva practical and relatively simple and inexing in the other member of the pair, over pensive reinforcement, which can beieadily the inclined face of the lirst member. This applied, which will compensate automaticalgradually expands the dowelrand as fast as it 70 ly to meet variations in the heels and which expands, it is held against contraction orrewill exert a binding force on the heel inatractive movement, by the .progressive interterial. y Y locking of the teeth on thetwo parts. and

The invention involves a dowel constructhe frictional engagement with the walls of f tion which is automatically expanded as it is the bore inA which itis seated, the latter be- 7 5 driven in the heel and comprises certain ing aided, if found desirous, byroughening other novel features of construction, combi-v or serratiiig the outer sides of the'dowel nations and arrangement of parts as' will parts, as indicated at 13, Y l be clear from the following specification. T o further afliicl theV dowel in the heel, 'I In the drawing accompanying and formmay incline the interlocking teeth of the two so ing a part of this specification, l have illusparts, as Shown in Figure 4 so as to cause trated the invention embodied in different the two parts to offset laterally, as they practical forms, but wish 'it understood that are driven, as appears in Figures 2 and 5. it is capable of further modification witli- This offsetting causes each piece ofthe dowel out departure from the true spirit and scope to bite sidewise into the heel, more firmly s.; of the invention. anchoring it and in the case of the heel breakln the drawing referred to: ing, preventing the broken piece of the heel Fio'ure l is a vertical sectional view of a from twisting on the dowel. The edges of wood heel, showing the dowel applied therethe pieces, where they oiset, may be left relt0 Y y atively sharp, as shown, so that'they will so Figure 2 is a transverse sectional view of readily b ite into the material. the same on substantially the plane of line If desired, when setting the dowels, glue 2-2 of Figure l. or other adhesive may be used, but this is Figure 3 is a bottom plan view of the heel. usually unnecessary as the expansion is ordi- 40 Figure l is an enlargement of one of the narily suificient to permanently interlock the o5 dowel pins, showing the same in side and dowel in the heel.

front elevation. Thedowels are usually so placed that the FigureV 5 is an enlarged cross sectional expansion will be in line with the grain of view illustrating the ofl'fsetting7 feature. the WOOd 0r other heel material, so as to Figure 6 is a detail of a hollow form of avoid splitting the heel. Thus, in Figure 10o dowel piece, showing the same in front and 2,1't will be noted that the plane of expansion end views. z is longitudinally of the heel so that the eX- Figures 7 and 8 are detail views of a tupansion will result in a stretching ofthe bular forni of expans'ible dowel. libres, without materially separating or In the lirst form of the invention illus- Spreading them. The mOre OrleSs Oval cross 105 trated, the expanding action is obtained by section produced by the expanding of the making the dowel in two reversely arranged dowel also is a material aid in preventing a wedge parts l() and 11, having inclined enbroken portion of a heel from twisting aging faces, as shown, which preferably, loose. are toothed, as indicated at 12, to cause the Another method of expanding and inter- 11o locking the doWel Figures 7 and 8, consists ofra piece of tubing 14, driven into a borein the heel and then'expanded, as shown at 15, as by means of asuitable eX.- panding tool forced into the same.

The top lift of the heel, which I have indicated at 16, may be secured over the end.

of the dowel, as by brads or screws, or it may be partly secured by leaving'the dow'el With a projecting outer end portion, over .Which the top lift is-engag'ed, as sliovvn at 17, Yand which projecting lift-securing portion.. may be made to resemble the usual screw head.

yAs a further possible modification, the dowel may-be madeof square or other ang`ular cross section. 'This--o'ffers'greaterresistance to twistingstrains than the somewhat angular or more or less sharp cornered elliptical form producedy by the expansion in igures l and 2.Y In such a case, a special drill for producing a square orangular hole Would be employed o'r forming the seat for the dowel.

What I claim is:

1. The combination, of a ldowelr consisting of two-members having a Wedging engageteeth on the meeting facesY of saidl Wedge members for holding the same Vin expanded relation, said teeth being inclined to the `transverse plane of the dowel to'eec't the offsetting of one memberV with respect tothe other'.

2. The combination, e of engaging' members provided with teeth on the meeting faces thereofinclined to the transverse plane of the doWel to cause the members to offsety laterally with Yrespect to each other..

3. The combination, of a doWel consisting of' engaging members provided with teeth on the meeting faces thereof inclined to the transverse plane of the doWel to causethe members to offset laterally with respect to of a doWel consisting each other, said offsetting members having relatively sliarp'ed,` g;es` to biteinto the material Vin which the dowelfisV embedded.

4. The combination, of a compound dovve]l seated'in a bore and comprising overlapping members fitting the Walls of the bore and having' engaging teeth on the meetingA faces thereof/automatically interlocking to vhold said members seated in the bore, said teeth being inclined to the longitudinal axis4 of the members to automatically' offset one member with respectv to the other. Y Y

5; A-n expansible dowel for- Woodv heels f or the like' comprising` cooperating headless Wedgemembershaving ratchet teeth on the meeting faces thereof inclinedto transverse planesof the dowelto produce a lateral offsetting of the Wedge parts as they areid'riven Y oneover the' other.

In Witness whereof, I' have hereunto set my hand'this 16 day of April, 1920.

WVitness':

PETER" ToTANs.'

ANDREW c. HAUCK. Y 

